Hello. I'm not sure if this is an old issue or not, but I was not able to find some thread about this subject.
When I paste a picture in LyX (from the clipboard), it shows a dialog asking where to save that picture and automatically inserts it on the document. This is OK and very useful, but if the picture has transparency (eg. a PNG image with transparent background), all the transparency turns black. The interesting part is that, if I save the picture somewhere else (without using LyX), and then load the picture as usual on the document, this problem doesn't occur. That is, all the transparency is handled as expected. Is this a bug? Or is there a way to workaround this? Cheers, --- Diego Queiroz